I've been using MSE for years and scanning the PC every other week using Sophos virus removal and Malwarebytes for years and never had a single virus trojan or anything else which could be nasty.
One other thing I haven't mentioned is a bit of common sense while surfing the net is better than any of the above.
One other thing I haven't mentioned is a bit of common sense while surfing the net is better than any of the above.